#include <iostream>

using namespace std;

class A
{
public:
    A(int ix = 0, int iy = 0)
        :x(ix)
         ,y(iy)
    {}
    A(const A &);
    A& operator= (const A &);
private:
    int x;
    int y;
};

A::A(const A &rhs)
{
    if (this == &rhs)
    {
        return;
    }
    x = rhs.x;
    y = rhs.y;
}

A& A::operator= (const A &rhs)
{
    if (this == &rhs)
    {
        return *this;
    }

    x = rhs.x;
    y = rhs.y;
    return *this;
}

int main()
{
    return 0;
}
